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July 2020 / 37 Upon reaching a steady process state, several samples of the ake at the three different doses were obtained and evaluated for visual con rmation of the red sugar dispersion. The sugar appeared to be uniformly dispersed throughout the ake at all three dosing rates, as shown in Figure 1. This observation remained constant over the entire test period. Test results Visual comparison of the three different feedrates indicates that reintroducing off-size recycled granules using a dual-chamber feed hopper design delivers ef cient mixing, and segregation concerns can be nearly eliminated by granulation of the powder. When considering dry granulation utilizing a screening operation for recirculation of nes (at whatever cut point is effective for the process), a well-designed recy- cle loop with an ef cient feed mechanism will produce a batch that's optimized for downstream operations. This helps to minimize concerns in nal product quality that are traced back to inconsistencies in raw material content homogeneity. PBE For further reading Find more information on this topic in articles listed under "Agglomeration" and "Size reduction" in Powder and Bulk Engineering's article index in the December 2019 issue or the article archive on PBE's website www. powderbulk.com. Matthew Walczer (mwalczer@alexanderwerkinc.com, 215-442-0270) is national sales manager for Alexander- werk Inc. He has a BA in biology. Albin "Al" Friedrich (afriedrich@alexanderwerkinc.dom) also is national sales manager at the company. He has a BA in mechanical engineering. Both men have been with the company for nearly 3 years. Alexanderwerk Montgomeryville, PA 215-442-0270 www.alexanderwerkinc.com FIGURE 1 a. Test 1: 5 kg/h b. Test 2: 10 kg/h c. Test 3: 20 kg/h No two customers are alike. By designing a system to custom fit your application, we save you time and money, both during installation and for the duration. Custom Engineered Solutions INDUSTRIAL CONVEYORS 800-325-6377 www.rapat.com KEEPING YOUR BUSINESS MOVING Nol-Tec designs and manufactures integrated bulk material handling systems to help our clients realize the full potential of their materials. TRUSTED TO DELIVER™ SINCE 1983 sales@nol-tec.com | www.nol-tec.com | 651-780-8600